Japan Geoscience Union Meeting 2021

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[E] Oral

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM11] Coupling Processes in the Atmosphere-Ionosphere System

Thu. Jun 3, 2021 9:00 AM - 10:30 AM Ch.05 (Zoom Room 05)

convener:Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Loren Chang(Institute of Space Science, National Central University), Yuichi Otsuka(Institute for Space-Earth Environmental Research, Nagoya University), Yue Deng(University of Texas at Arlington), Chairperson:Huixin Liu(Earth and Planetary Science Division, Kyushu University SERC, Kyushu University), Masaru Kogure(National Institute of Polar Research)

9:15 AM - 9:30 AM

[PEM11-02] Model Simulation and Observation of Equatorial Ionospheric Response to Substorm

*Qian Wu1,2, Wenbin Wang1, Dong Lin1 (1.National Center for Atmospheric Research, 2.COSMIC, UCAR)

Keywords:Equatorial Ionosphere, COSMIC, GOLD

Equatorial ionosphere can react to substorm events via direct penetrating electric field. In the past, the thermosphere and ionosphere model driven by the high empirical ion convection models lacked the dynamic high latitude input to properly simulate the penetrating electric field and equatorial response. The recently developed magnetospheric and ionospheric coupling model GTR (GAMERA-TIEGCM-RCM) aims to resolve the issue. GTR is part of the Multiscale Atmosphere-Geospace Environment (MAGE) modeling effort. We will simulate recent substorm events to examine the penetrating electric field effect. Additionally, we will use the observations from recent missions such as GOLD, COSMIC 2, and ICON to validate the simulation results. These three missions provide unprecedented coverage of the equatorial ionosphere including ion density profiles, UV images, ion drift, and neutral winds. The ion drift and neutral winds are particularly important for understanding the equatorial dynamo.